Cable support



A. vv, GOTHBERG CABLE SUPPORT May 31,' 1927. A 1,630,423

Filed Dec. 22. 1925 2 Sheets-Sheet l Mv ATTORNEY A. W. GOTHBERG CABLE SUPPORT 2 Sheets-Sheet 2 May 31, 1927 Filed Deo. 22 1925 mme May 31,1921.

ARTHUR WILLIAM GOTHBERG, F NEWARK, NEW JERSEY;

CABLE surnom.

Application nica December 22, 1925. serial no. 76,950.

This inventionA relates to cable supports,

i `and more particularly to such supports for electric cables orconductors connected with and suspended by a plurality of articulated insulators.

It is the particular object and purpose of vmy present improvements to provide such a supporting means for cables or conductors in the form of aclamping device, which under normal conditions has tight clamping engagement'upon the cable to prevent shifting of the latter but which is so constructed, that in the event that the tension upon the cable on opposite sides of the device becomes unbalanced so as to cause the insulator string to swing from its normal perpendicular position, the clamping pressure upon the cable will be automatically released, thus permitting the cable to slip until the tension is again equalized when the clamping or holds ing pressure of the supporting device upon the cable will be resumed.

' It is a further general object of the invention to provide a cable supporting device of the above character consisting of few parts of simple form v.and rugged construcm'anufacturing cost.

tion so that the device is not liable to get out of order and can be produced at nominal With the above and other objects in view,

. the invention consists inthe improved cable support, and in the form, construction and relative arrangement ofits several parts as .will be hereinafter more fully described,

illustrated in the accompanying drawin and subsequently incorporated in the su joined claims. A

In the drawings, whereinI have -illustrated one simple and practical embodiment of my improvements, and in which similar reference characters designate corresponding parts throughout the several views,-.

I1`igure 1 is a side elevation showing my improved cable support as used in connection with an insulator string, and illustrating the insulator string in dotted lines swung in one direction lfrom its normalv position by excessive'tension on the cable on one side of the support; p

Fig. 2 is an enlarged side elevation of the supporting device, and n Fig. 3 is a sectional view taken substan- I tially on the line 3-3 of Fig. 2.

Referring in detail to the drawings, for

urposes of illustration, I have shown a.

of insulators 5 which may be of any The approved form and construction and articulated With each other by any desired/means usually employed for this purpose. This v-striiig of insulators at its upper end is pivotally suspended as at 6 from an arm of the tower or other structure shown at 7.

With the lower insulator 5 the upper end.`

connected relation with the inner faces of the hubs 10 on the yoke arms bearing against the opposite sides of the member 12. The upper surface of this clamping member is provided centrally thereof with the longitudinally extending groove15. -A comilementary clamping member 16 is provide similar groove 17, and these rooves of the clamping members are adapte to receive the lower and upper portions respectively of the cable indicated at 18.

Flach clamping' member is provided on opposite sides thereof and adjacent its ends with apertured lugs 19, said lugs,receiving bolts 20 having suitable heads on their upper ends and provided .with coil sprin s 21 bearing at their upper ends against t e lugs 19 on the clampin member 12 and engaged at their lower en s with the washer plates 22 which are adjustable upon eachof the bolts by means of the nuts 23 whereby the tension of said springs can be ,regulated as desired.

Through the medium of these springs, it will with' a tively opposite directions so that under norj mal conditions the cable confined in the members.

18 is clampingly grooves 15 and 17 of vvsaid The upper clamping member 16-is additionally provided on each side thereof at its center with a lug 24 and these lugs are adapted to be engaged by cams 25 -formed ontheupper sides of the hubs 10 of the yoke 8, each of said cams projecting in opposite directions from the hub center.

From the above description, the construction and o eration of the device can be readily un erstood. While 'the tensional stress of the cab1e 18 on o posite sides of the supporting device remains substantially equal, the string of insulators 5 will maintain a substantially normal perpendicular- 1 ot the drawings. rlhe yoke 8 will thereby be caused to swing or pivotally turn on the bolt 13, said yoke yremaining substantially at all times in alignment vwith the axis ot the insulator string. rlhus, the cams 25 at one ot their ends are caused to exert an upward bearing pressure on the lugs 2li ot' the upper clamping member and thus move the same upwardly 'relative to the lower member against 'the action of the springs 21. rIhe clamping pressure on the cable 18 is thus automatically released so that said cable may readily slip through the clamping or holding device while said device can slide freely on the cable. In this manner, liability ot' the cable being broken when subjected to an abnormal and excessive tensional -strain or pull will be obviated. As this strain is removed and the tension again equalized, the insulator string returns to,

its normal perpendicular position and the cams 25 move out of engagement with lugs 24 so that the clamping or holding pressure of the members 12 and 16 upon the cable 18 is resumed.

From the, above, it will be seen that I have devised a support for electric cables or conductors which will positively hold or sustain the cable in proper position relative to the insulators under` normal conditions, and yet will automatically release the cable in response to an excessive tensional Strain thereon from either direction. The device as above described consists of relatively few elements of simple form and construction which will operate in a positive and reliable manner, and are not liable to get out of order. The illustrated example of my present improvements is believed to be entirely practical in every respect. Nevertheless, it is to be understood that the essential object and purpose of the device might also be attained in other alternative mechanical structures, and I accordingly, reserve the privilege of resorting te all such legitimate changes in the form, construction and relative arrangement of'the several parts as may vbe fairly embodied wlthin the spirit and scope of the invention as claimed.

I claim:

1. In combination with cable suspension means pivoted at its upper end for swinging movement, a cable support connected with the lower end of said suspension means, said support including complemental parts to clampingly hold the cable against shifting movement relative to the suspension means under normal conditions, and means for positively moving one ot' said parts relative to the other to release the cable when said suspension means is swung from its normal position by excessive tenslonal strain on the cable at one side thereof.

2. In combination with cable suspension 'means pivoted at its upper end tor swinging movement, a rcable support connected with the lower end ot said suspension means, said support including complementarv members and means urging said members into clamping engagement against opposite sides of the cable to hold the saine against movement relative to the suspension means under normal conditions, and cam means automatically operable when the suspension means is swung in one direction by an excessive tensional strain on the cable at one side thereof to move said members relative to each other and release theeable.

3. In combination with cable suspension means pivotcd at its upper end for swinging movement, a cable support connected with the lower end of said suspension means. said connecting means comprising a yoke and the support including complementary members mounted in said yoke, means yieldingly connecting said members and urging them into clamping engagement upon the cable to hold the latter against shitting movement relative to thesuspension means under normal conditions, and one of said members and said yoke being provided with parts automatically coacting with each other when the suspension means is swung in one direction by abnormal strain on the cable at one side thereof to thereby release the clamping pressure of said members 0n the cable.

4. In combination with cable suspension means pivoted at its upper end for swinglng movement` a cable support connected with the lower end of said suspension means, said connecting means comprising a Voke pivotally connected with the suspension means and said support including complementary upper and lower'cable clamping members and means yieldingly holding said members against relative movement in clamping engagement upon the cable, means pivotally rconnecting the arms of the yoke with the lower clamping member, said upper clamping member having lugs on opposite sides thereof, and cams on the oke arms automatically coacting with said lilgs when the suspension means is swung in one direction from its normal position bv excessive tensional strain on the cable whereby the clamping members are relatively moved to release their clamping pressure on the cable.

lUO

' `each other and release the cable.

6. Means for connecting an electric cable to a string of insulators including a suspending element adapted for connection to the insulator string, cable clamping means including a member movably supported by said element, means for retaining said member in clamping engagement upon the. cable in the normal position of the insulator string to prevent movement of the cable re1- ative thereto, and said member and the snspending element having parts automatically y coactin when the insulator string is swung in one rection from its normal position by 'i excessive tensional strain on the cable to positively move said member and release the cable. and said coacting parts, upon the return of the insulator string to lts normal position permitting of the restoration of the clamping pressure ofsaid member upon the cable.

7. Means for connecting anelectric cable to a string of insulators comprising a suspension element adapted to be connected to the insulator string, cable clamping means including a member supported by said element for movement relative thereto, lmeans yieldingly urging said member into clamping engagement upon the cable to hold the lattery against movement relative to the 1n- ,sulator string in the normal position thereof, and means connected with said suspension element and l'coacting with a part on said member when the insulator string is swun in one direction by an excessive tensionastrain on the cable to positively move said member relative to the' suspension element and release thevcable, and said means, upon the return of the insulator string to its normal position permitting of the restoration of the clam ing pressure of said member upon the ca 1e.

8. In combination with a suspended string .of insulators. cable clamping means connected with the lower end of said insulator string including a movable clamping member andmeanscooperating therewith to hold said member in clamping engagement upon `the cable in the normal position of the insulator string but permitting angular movement of said member and release the clamping lpressure ony the cablenpon displacement of te insulator string from normal perpendicular position by tension on the cable, and

said means acting to move said member into of the insulator string t'o its normaly position.

9. ln combination with a suspended string of insulators, cable clamping means connected with the lower end of the insulator string including relatively movable clamping members, and means for automaticall releasing a clamping pressure of said mem ers on the cable when the insulator -string is displaced from a normal perpendicular position by tension on the clamping pressure upon the return of the insulator string to vnormal position, said means consisting of means acting to yieldingly resist relative angular movement of sald members with respect to the cable, and additional means operable in the swinging movement of the-insulator string to overcome said resisting means and eiiect such relative movement ot' the cable clamping members.

10. ln combination with suspension means `mounted for swinging movement, a support carried thereby, a clamp carried by the support, means for maintaining the clamp in clamping relation to a cable, and independent means, other than the cable connected with the support and cooperating with the clamp for rendering the maintaining means ineffective upon the occurrence of excessive longitudinal strain upon the conductor at one side of the suspension means.

ll. lin combination with suspension means mounted for Swingin movement, a support, a clamp carried by the support, means normally maintaining the clamp in clamping engagement upon a conductor, and means carried by the support and connected with the clamp for rendering the maintaining means ineiective upon swinging movement of the suspension means beyond a predetermined extent.

12. lin combination with a support mounted for swinging movement, conductor clamping means comprising relatively movable members carried by the support, means connecting said members and normally maintaining them in clamping relation to a cable,

cable and restoring such lll. lin combination with cable suspension means mounted tor swinging movement, a, cable support carried by said suspension means including a member adapted to be located beneath the cable and pivoted to said support. at a point below the cable, a clamping member movably mounted with respect to and cooperating with said lirst named member, 7means normally maintaining said members in clamping engagement with respect to the cable, and means carried by tbe support tor rendering said maintaimng means inellective when the suspension means is swung in one direction by an excessive .tensional strain on the cable at one side oit tbe support.

l5. Means lor connecting a conducting -cable to a String ot insulators, comprising a supporting clamp including coacting upper and lower members, means for maintaining' the members in clamping relation to the cable and further including a support for the members pivotallj,7 connected with the lower one thereof at a point below the cable and adapted to be connected with the string l ot insulators, and means carried by the clamp acting below the upper member for effecting release ot the clamping action upon swinging movement of the support as the result or" excessive tensional strain applied to the cable at one side ot the support.

' lt. lln combination with cable Suspension means mounted tor swinging movement, a

cable support carried by said suspension means, relatively movable clamping members located Within the confines of the support and one pivoted thereto` at a point be-f low the cable, means or maintaining said vmembers in clamping relation to the cable,

means mounted for swinging movement, a.

support pivoteol thereto, upper and lower cable clamping members located Within said support, a pivotal mounting tor connecting tbe lower clamping member with the support at a point below the cable, means normally maintaining said clamping members in clamping relation to tbe cable, and upwardly extending means mounted at said pivotal mounting and coacting with the upper clamping m'cmber'tor releasing the clamping engagement upon the occurrence of an excessive longitudinal strain upon the cable at one side of the support ln testimony that l claim the foregoing as my invention, ll bave signed my name hereto. l

ARTHUR llllllilillllll/l GTHBERG. 

